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- Frontier Security Systems Limited
Company profile · Installers
Frontier Security Systems Limited
Frontier Security Systems Limited is a 28-year-old private limited company registered in Dorchester, company number 03520473, one of 20 installation companies (insulation, lifts, shutters and similar) in Dorchester. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Frontier Security Systems Limited over the years
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £2,064 (-3.2%) on the year before, to £62K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £106K against £52K owed within a year: 2.0 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £62K | £106K | £52K | 1 | |
| 31 Mar 2024 | £64K | £72K | £87K | £31K | 2 |
| 31 Mar 2023 | £85K | £75K | £96K | £21K | 2 |
| 31 Mar 2022 | £81K | £72K | £84K | £17K | 1 |
| 31 Mar 2021 | £77K | £65K | £76K | £18K | 1 |
| 31 Mar 2020 | £70K | £61K | £66K | £8,168 | 1 |
| 31 Mar 2019 | £71K | £63K | £71K | £16K | 1 |
| 31 Mar 2018 | £71K | £65K | £77K | £20K | 1 |
| 31 Mar 2017 | £62K | £69K | £77K | £16K | 1 |
| 31 Mar 2016 | £58K | £61K | £73K | £15K |
Who runs and owns Frontier Security Systems Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| J*** A*** | Director | Mar 1998 |
| J*** A*** | Secretary | Oct 2024 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| P*** A*** | Secretary | Mar 1998 | Oct 2024 |
| Ashcroft Cameron Secretaries Limited | Corporate Nominee Secretary | Mar 1998 | Mar 1998 |
| Ashcroft Cameron Nominees Limited | Nominee director (company) | Mar 1998 | Mar 1998 |
Person with significant control
Where Frontier Security Systems Limited is registered
The registered office is in Dorchester (DT1), in the Dorset local authority area, South West. Show DT1 3FD on a map.
Other trade companies in DT1
- Wareham MOT LimitedMechanics and garages
- Coastal Crest Dorset Cleaning Company LimitedCleaning companies
- Hybrid Superstructures LtdBuilders
- Solo Construction & Development LimitedBuilders
- Guardian Home Improvements LimitedFinishing trades
- Dorset Cars LtdMotor traders
- Rebecca Scaffolding LtdScaffolders
- Fox Roofing & Leadworks LtdRoofers
Also registered at this address
15 other companies use the same registered office as Frontier Security Systems Limited.
- Angel Clean 1972 LimitedCleaning companies
- Becks Building LtdProperty developers
- Belle Civils and Groundworks LtdBuilders
- Belle Civils LimitedBuilders
- Breakwater Construction LtdBuilders
- CLBS Dorset LimitedBuilders
- CLBS Kitchens and Bathrooms LtdBuilders
- Concept Creations LtdProperty developers
- Neves Joinery & Construction LtdJoiners and carpenters
- Pro-Active Joinery and Construction LimitedJoiners and carpenters
- S2A Group LtdProperty developers
- Senior Heating Solutions LtdPlumbers and heating engineers
- Smart Home Improvements Dorset LtdBuilders
- Stonehaven 5 Studland Road LtdProperty developers
- Surface2Air Developments LtdProperty developers
What happens if Frontier Security Systems Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 03520473
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 1998 (28 years ago)
- Registered office
- 26 Middlemarsh Street, Poundbury, Dorchester, DT1 3FD
- Nature of business
- Other construction installation (SIC 43290)
Security systems service activities (SIC 80200) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 February 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Dorchester
Other active installation companies (insulation, lifts, shutters and similar) registered in Dorchester.
- Geoff Stone Property Maintenance Limited2002
- Greenteepee Limited2020
- JTM Landscapes Limited2013
- Jurassic Doors Ltd2021
- Lumina Shutters & Blinds Ltd2026
- Malcolm Goodyear Carpentry & Building Services Limited2003
- PJR Installations Ltd2013
- Redwood Blinds Limited2022
All installation companies (insulation, lifts, shutters and similar) in Dorchester · All trades in Dorchester · Installers across the UK
Frequently asked questions
When are Frontier Security Systems Limited's accounts due?
Frontier Security Systems Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Frontier Security Systems Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Frontier Security Systems Limited still trading?
Frontier Security Systems Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Frontier Security Systems Limited do?
Frontier Security Systems Limited is registered under Other construction installation (SIC 43290); Security systems service activities (SIC 80200).
How old is Frontier Security Systems Limited?
Frontier Security Systems Limited was incorporated on 3 March 1998, 28 years ago.
Who runs Frontier Security Systems Limited?
Frontier Security Systems Limited has 1 active director, the longest-serving appointed in Mar 1998. Their names and service addresses are on the Companies House register.
Who owns Frontier Security Systems Limited?
One person or company has significant control of Frontier Security Systems Limited: an individual (owns 75% or more of the shares).
What is the penalty if Frontier Security Systems Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Frontier Security Systems Limited on Companies House for filed documents, officers and the full history.
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Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.